Kinase, in vitro: 

An enzyme-substrate reaction that occurs in non-living experimental conditions such as a test tube. For example, a purified enzyme is reacted with a substrate protein or mixture of proteins or peptides.

Nik S40-p
Src Y112-p , Y428-p , Y507-p
 Putative in vivo kinases: 

An enzyme-substrate reaction that occurs within living cells; includes cultured cells, ex vivo samples, and intact organisms. In the case of kinases, the large number of protein kinases in intact cells makes exact identification of the responsible kinase challenging.

Nik S8-p , S40-p , S278-p , S486-p
Src Y112-p
AGK2 K403-ac
ephrin_B1 Y507-p
gefitinib Y507-p
H2O2 K403-ac
menadione K403-ac
MG132 K171-ub
nicotinamide K403-ac
PDGF Y112-p
saracatinib Y112-p
siRNA Y112-p , K403-ac
Su11274 Y503-p , Y507-p
trichostatin_A K403-ac
U0126 Y401-p , Y503-p
VEGF Y428-p , Y507-p
vorinostat K432-ac , K497-ac